import requests
url = 'http://pic.netbian.com/uploads/allimg/180826/113958-153525479855be.jpg'
headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36'
}

res = requests.get(url,headers = headers)
with open('fengjing.jpg',mode='wb') as f:
    f.write(res.content)